navy seals guarding him gunned down his attacker. now, as his forces take over security, they still face a formidable enemy. can you tell americans what's still at stake in afghanistan after all these years of war? >> karzai: the reason for the nato and american intervention in afghanistan was terrorism. terrorism has not gone away; it has increased. >> logan: when you say that terrorism has increased, what do you mean exactly? >> karzai: if terrorism means violence against civilians, if terrorism means violence against our allies, it has increased, it has not abated, it has not gone away. >> logan: president karzai says afghan intelligence reports to him on the presence of foreign fighters-- arabs, chechens, and others-- who are captured and killed on afghan soil. >> karzai: name them al qaeda, name them islamic movement of uzbekistan, name them haqqani, name them taliban, whatever. they're still there, and they have the ability to continue ten years on to come and hurt us and kill your troops and kill our troops, kill our civilians